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def filter_log_data(input_file): print(f"Filtering data in {input_file}") # Define the list of important words important_words = ['unauthorized', 'error', 'kernel error', 'OS error', 'rejected', 'warning', "error", "fail", "exception", "critical", "security", "authentication", "intrusion", "attack", "status", "performance", "uptime", "load", "config", "setting", "permission", "firewall", "debug", "trace", "stack"] # Define the output filename output_file = f"{input_file.replace('.txt', '-filtered.txt')}" # Open the input and output files with open(input_file, 'r') as input_file, open(output_file, 'w') as output_file: # Loop through each line in the input file for line in input_file: # Check if any of the important words appear in the line if any(word in line.lower() for word in important_words): # If yes, write the line to the output file output_file.write(line) # Return the output filename #return output_file